Pyrolysis-Gas Chromatography - A Method for Rapid Identification of Polymers

摘要

A pyrolysis gas chromatography method for the rapid identification of organic polymers is described. The method described here makes use of a Chemical Data Systems Pyrochrom which separates the pyrolyzate into a dual flow system equipped with thermal conductivity and flame ionization detectors. This arrangement permits the determination of both the small and large components present under optimum conditions. A linear temperature program is used to resolve the higher boiling components of the pyrolyzate in a reasonable time. The pyrograms obtained not only offer a 'fingerprint' of the polymer, but also enable a detailed qualitative and quantitative analysis of the fragments of the pyrolyzate. The results of studies on some classes of elastomers, thermoplasts and fabrics are reported. The polymer classes investigated include polyolefins, polyesters, polyurethanes, polyethers, polyamides, phenolics, polycarbohydrates, epoxy resins and polycarbonates. (Author)